Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1995-08-02
1998-11-03
Gutierrez, Diego F. F.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
374122, 374142, 374141, 374144, 374147, G01J 502, G01K 1302, G01K 114
Patent
active
058298770
ABSTRACT:
A measuring technique and method are provided to simultaneously determine the molecular density of several molecular species and the temperature within a closed process room in a melting or combustion process. In such processes in the industry, e.g. in metallurgic process industry, it is important to determine the temperature and the contents within the gas or flame without physically connect to or disturb the process. This has shown to raise large problems especially at high temperatures. The radio signal over a frequency band is measured on the outside of the process room through a window in the mantel covering as a function of frequency and registered on a computer as a radio spectrum. The system is calibrated by using a known signal transmitted through the process room. The spectral lines are identified by their frequency from a database. The temperature is determined from several lines of the same molecular specie and the molecular densities are determined from the intensities of the lines. The method is suitable to determine vibrational and rotational excitation of molecular species in the radio wavelength range of 500 m et 30 m. The densities of molecular species and the temperature can be imaged in three dimensions inside the process room or exhaust channel if interferometers are used for simultaneous two dimensional imaging from several azimuth directions.
REFERENCES:
patent: 2690511 (1954-09-01), Elion
patent: 2844032 (1958-07-01), Tandler et al.
patent: 2871758 (1959-02-01), Moutet
patent: 3317737 (1967-05-01), Kopsel et al.
patent: 3358974 (1967-12-01), Bernard
patent: 3617737 (1971-11-01), Houghton et al.
patent: 3632212 (1972-01-01), Bernal
patent: 3771874 (1973-11-01), Sadjian
patent: 4275787 (1981-06-01), Helbig
patent: 4438069 (1984-03-01), Peterman et al.
patent: 4573805 (1986-03-01), Savage et al.
patent: 4627743 (1986-12-01), Okabe et al.
patent: 4693614 (1987-09-01), Hatono et al.
patent: 4798209 (1989-01-01), Klingenbeck et al.
patent: 5001434 (1991-03-01), Marrelli et al.
patent: 5014010 (1991-05-01), Helms et al.
patent: 5124653 (1992-06-01), Andresen et al.
patent: 5161890 (1992-11-01), Fima
Hanson, R. et al., Temperature Measurement Technique for High-Temperature Gases Using a Tunable Diode Laser, Applied Optics, vol. 17, No. 16, (15 Aug. 1978).
Fernandez, M. et al., "A New Approach to Spatially Resolved Flame Temperature Measurements," Applied Spectroscopy, vol. 33, No. 2, (Mar./Apr. 1979).
Abstract of JP 58-172616, published as JP 60-64234 on 12 Apr. 1985.
LandOfFree
Method for measuring temperature of at least one of a gas and a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for measuring temperature of at least one of a gas and a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for measuring temperature of at least one of a gas and a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-682876